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CF2137B.Fun Permutation
Fun Permutation
You are given a permutation of size .
Your task is to find a permutation of size such that for all . In other words, the greatest common divisor of the sum of any two adjacent positions should be at least .
It can be shown that this is always possible.
A permutation of length is an array consisting of distinct integers from to in arbitrary order. For example, is a permutation, but is not a permutation ( appears twice in the array), and is also not a permutation ( but there is in the array).
denotes the greatest common divisor (GCD) of integers and .
Input
Each test contains multiple test cases. The first line contains the number of test cases (). The description of the test cases follows.
The first line of each test case contains an integer ().
The second line contains integers ().
It is guaranteed that the given array forms a permutation.
It is guaranteed that the sum of over all test cases does not exceed .
Output
For each test case, output the permutation on a new line. If there are multiple possible answers, you may output any.
Note
In the first test case, and , so the output is correct.
Samples
3
3
1 3 2
5
5 1 2 4 3
7
6 7 1 5 4 3 2
2 3 1
4 5 1 2 3
2 1 3 7 5 6 4
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